Grinding wheel



NOV. 26 1940. w PflLESHURE 2,223,326

GRINDING WHEEL Filed Feb. 7, 1939 5 id a '4 jga: 1%.?

' INVENTOR.

" ATTORNEY.

Patented Nov. 26 1940 GRINDING WHEEL I Willard P. Leshnre, Springfield, Mass., assignor to A. Linton Bausman, Springfield, Mass.

Application February 1, 1939, .Serial No. 255,044

, 3 Claims.

This invention relates to improyements in grinding wheels and more particularly to cylinder wheels of a non-plastic type.

I It is a principal object of the invention to 6 provide a grinding wheel which is adapted to be rigidly but removably secured, to a rotatable support. The construction is such that the wheel may be rotated at high speed without danger of breaking. I 1

Still another object of the invention is the provision of a novel grinding device having a solid and flat face for the grinding operation. -As

a special feature, the wheel is provided with a I plurality of relatively narrow tangentially extending lubricating sections which not only serve to .improve the cutting action but acts to strengthen the wheel.

- It is a further object of the invention to provide a grinding wheel having annular reinforcing member molded therein to which are rigidly secured, preferably by welding, a series of spaced nuts for receiving bolts attached to a supporting plate. As will appear, the construction of this invention is such that when the wheel is fastened to the machine on which it is to be used, the strain is not imposed upon the bonded abrasive but upon the reinforcing member.

Various other novel features and advantages of the invention will be hereinafter more fully referred to in connection with the accompanying J drawing, wherein: 1

. g. 1 is a top plan view of the grinding wheel of the inverition;

Fig. 2 is a side elevational view partly in section of the wheel of the invention;

50 faces and a support 4 for the annulus. The annulus is a unitary member and maybe made of any suitable abrasive material.

The support I is adapted to be fitted to a ma.- chine ,and be rotated and it may be variously 5 formed for this purpose. Preferably it consists Referring now to the drawing in detail, the

suitable.

wheel in that they bind the wider abrasive parts 50 ring in the manner shown in Figs. 3 and forges" of a rotatable plate-like member to which the annulus may be readily and rigidly secured.

. Embedded in the annulus 2 is a closed ring member 6 which is preferably formed from a rod *that the outer side of the nuts are substantially flush with the plane of the inner or rear side of 10 the annulus as shown in Fig. 2 so as to be readily accessible. Thus the support 4 may have a plurality of spaced bolts 9 for fastening to the nuts so that the abrasive body is thereby rigidly carried by 15 the support for rotative movements. 7

. In the annulus I provide a plurality of spaced relatively thin or narrow sections Hi, the planes of the sides of which are generally tangentially disposed relative to the longitudinal axis of the 20 annulus. Generally the sections serve to bond the abrasive sections of the annulus adjacent thereto together and form therewith an integral structure.

These sections 10 preferably consist of material -25 adapted to function as a lubricant for grinding operations andfacilitate the abrasive action of .the face of the annulus. Being tangentially disposed as they are, they provi e narrow tangentially disposed strips on the f e of the annulus 30 'which extend inwardly from the periphery It will be noted that the sections In do not extend into one another nor do they extend entirely' through the abrasive body. Thus the said body is an integral structure which makes for strength and simplicity in manufacture and handling.

The'lubricating sectors In may consist of various lubricating mediums but I have found sulphur, rosin, stearine, or the like to be particularly Such sectors not only strengthen the together but they enhance the cutting qualities of the wheel. r

The reinforcing member may take various forms. That is, the nuts may be secured to we.

there may be two concentric rings 20 with nuts 22 secured thereto as shown in Fig. 5.

In another way, there could be a ring 24 with nuts 26 secured to its inner side as shown in Fig. 6. Still another modification is shown in Fig. 7 where instead of a rod-like ring I employ an angle iron member 28 for supporting aplu rality of nuts 30. v V

In ,order to further strengthen the wheel, I preferably provide a plurality of wire windings W around its periphery. These wires will be under such tension as to resist centrifugal force and hold the unit integral during rotation.

While I have described the invention in great detail and with respect to the present preferred ,form thereof, it is not desired to be limited thereto since many changes and modifications may be made therein Without departing from the spirit and scope of the invention. What is is desired to claim and secure by Letters Patent of the United States is:

l. A grinding device of the class described comprising, a body of abrasive material in the form of an annulus having substantially flat opposite end faces, one of said end faces being adapted to function as a working face and the other adapted for abutting a supporting plate, relatively narrow bonding and lubricating sections of sulphur composition extending inwardly from the working face and outer periphery of the annulus terminating at a distance inwardly fromv the iii-.- ner periphery and at a distance upwardly from the said other face thereof, the said bonding sections dividing the working face of the annulus and the adjacent outer periphery thereof adjacent said working face into sections and bonding them together providing alternate Wide abrasive and relatively narrow lubricating sections and a relatively solid portion adjacent said other face, a ring-like member incorporated in the solid portion of annulus below the said bonding sections, and bolt receiving members in the said portion secured to the ring-like member extending through the said other face of the annulus. I

2. A grinding device of the class described comprising, an abrasive body in the form of an annulus having substantially fiat opposite end faces with one of the end faces adapted to function as a working face and the other of the end faces adapted to function as an abutment for a supporting plate, a plurality of relatively narrow lubricating sections of a sulphur composition extending inwardly from the working face and the outer periphery of said body terminating at a distance inwardly from the inner periphery and at a distance upwardly from the abutting face thereof, a ring-like support member incorporated into the solid portion of said body below said sections, and a plurality of bolt receiving members disposed in said body and extending. through the supporting face thereof and secured to said support member, all adapted and arranged in cooperative relationship whereby said sections divide the working face-and the outer periphery of said body into sections and bind them together to provide alternating wide abrasive and narrow lubricating sections.

3. A grinding device of the class described comprising, an abrasive body in the shape of an annulus having substantially flat opposite end faces with one of the end faces adapted to function as a working face and the other of the end faces adapted to abut a supporting plate for securement thereto, and a plurality of relatively narrow spaced lubricating sections of a sulphur composition associated with said body and each extending inwardly from the working face and the outer periphery of said body terminating at a distance inwardly from the inner periphery and at a distance upwardly from the abutting face thereof providing alternate lubricating and abrasive sec- 

